Merck
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31623

Sigma-Aldrich

Silicon dioxide

washed and calcined, analytical reagent

Synonym(s):
Quartz, Silicon dioxide, Sand, white quartz
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
SB.52

forma

granular

Nível de qualidade

100

qualidade

washed and calcined, analytical reagent

Impurezas

≤0.2% Soluble in HCl

perda

≤0.1% loss on ignition

granulação

0.1-0.5 mm (min.70%)

traços de ânion

chloride (Cl-): ≤100 mg/kg

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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Descrição geral

Silicon dioxide (SiO2) exists in three crystalline forms, namely quartz, tridymite and cristobalite. It reacts with hydrofluoric acid to form silicon tetrafluoride (SiF4) and water. Silicates are formed on reacting SiO2 with alkali melts. SiO2 is the main component in glass, brick and concrete and also forms the insulator in silicon devices. The alteration of the surface of SiO2 with (3-aminopropyl)triethoxysilane (APTES) for binding lactate dehydrogenase (LDH) to form an amino layer has been reported. The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.

Aplicação

Silicon dioxide may be used to produce silicon by electrochemical reduction in the presence of calcium chloride (CaCl2) electrolyte.

Código de classe de armazenamento

13 - Non Combustible Solids

WGK

nwg

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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